Downregulation of p53 by Insufficient CTCF in CD4+ T Cells Is an Important Factor Inducing Acute Graft-Versus-Host Disease

Frontiers in Immunology

卷:11

关键词: aGVHD;    CD4+ T cell;    p53;    CTCF;    P300;   

DOI  :  10.3389/fimmu.2020.568637

来源: DOAJ

【 摘 要 】

Recent evidence indicates that p53 plays a protective role against various systemic autoimmune diseases by suppressing pro-inflammatory cytokine production and reducing the number of pathogenic T cells. However, whether abnormal p53 expression participates in the development of acute graft-versus-host disease (aGVHD) remains unclear. In this study, we demonstrated that p53 was downregulated in CD4+ T cells from patients with aGVHD compared with the non-aGVHD group. Furthermore, we confirmed that low expression of CCCTC-binding factor (CTCF) in CD4+ T cells from aGVHD cases is an important factor affecting histone H3K9/K14 hypoacetylation in the p53 promoter and p53 downregulation. Restoring CTCF expression in CD4+ T cells from aGVHD patients increased p53 amounts and corrected the imbalance of Th17 cells/Tregs. Taken together, these results provide novel insights into p53 downregulation in CD4+ T cells from aGVHD patients.

【 授权许可】

Unknown